16 cards where the card is tagged “impulse-instant”

Arcane Infusion (Innistrad: Midnight Hunt #210)
Augur of Bolas (War of the Spark #41)
Keldon Flamesage (Dominaria United #135)
Leyline Dowser (Outlaws of Thunder Junction Commander #39)
Muse Vortex (Commander 2021 #28)
Narset, Parter of Veils (Commander Masters #853)
Peer Through Depths (Duel Decks: Mind vs. Might #5)
Picklock Prankster // Free the Fae (Wilds of Eldraine #64)
Pieces of the Puzzle (Shadows over Innistrad #78)
Search for Azcanta // Azcanta, the Sunken Ruin (Ixalan #74)
Search for Azcanta // Azcanta, the Sunken Ruin (Ixalan #74)
Silundi Vision // Silundi Isle (Zendikar Rising #80)
Silundi Vision // Silundi Isle (Zendikar Rising #80)
Summons of Saruman (Tales of Middle-earth Commander #70)
Uncovered Clues (Dragon's Maze #19)
Velomachus Lorehold (Strixhaven: School of Mages #245)
Wandering Archaic // Explore the Vastlands (Strixhaven: School of Mages #6)
Wandering Archaic // Explore the Vastlands (Strixhaven: School of Mages #6)
Wandering Mind (Innistrad: Crimson Vow #251)

In the blink of an eye, they strode from deep snow to the end of this search.